Author: Tim Hunt
MDL-28652 qtype calculated, bad display of placeholder names on the editing form.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=65be66e4d43ac820ff1c1621c49fac89689dd9a5
http://github.com/moodle/moodle/commit/65be66e4d43ac820ff1c1621c49fac89689dd9a5
+ 2.1 en [sharedwildcard,qtype_calculated]